Scraper and tamping rod



ug; 12",. 19241v Y 1,505,013

J. J. DIXON SCRAPER AND TAMPING ROD Filed July ll. 1923 ...Tun lljixnn.

Patented Aug. 12, 1924.

paires STATES JOI-IN JAMES DIXON, O'F BRR-ACKVILLE, WEST VR-GINIA.

SCRAPER AND TAMPING ROD.

Application iled July 11, 1923. Serial No. 650,928.

Be it known that I, JOHN J. DIXON, a citizen of the United States, residing at Barrackville, in the county of Marion and State of lVest Virginia. have invented certain new and useful Improvements in Scraper and Tamping ltods, ofv which the following is a specification..

This invention relates to tools for use in connection with the operation of drilling and preparation for blasting in mines, quar ries, etc.

It is common practice during the operation of drilling a hole for a blasting charge or other explosive material to frequently scrape out and remove the small particles that have become detached by drilling, and, after a hole of t-he desired depth has been drilled and all of the particles removed, an explosive charge is inserted in the hole and tamping material is packed thereon by means of a tamping rod.

It is the principal object of this invention toI provide a combined scraper and tamping rod which is well adapted to perform the two above mentioned operations, which is of sufficient length to accommodate deep holes, yet of novel construction so as to render it light and durable; and, which is so constructed that the parts may easily be removed therefrom should they become worn or broken or should it be desired to substitute different sized parts, and to replace the required parts. f

A still further object is to provide a scraper and tamping rod which is constructed entirely of such materials that, should inflammable gas, coal dust, or other ignitible elements he encountered during the operation of drilling or when packing tamping material in the hole, it will not be possible to cause a -sparkV should any portion of the rod come in contact with a inty substance, thus obviating the possibility of causing` a premature or inopportune explosion.

Cther objects and advantages will appear in the following detailed description, 'taken in connection with the accompanying drawings, forming a part of this specification and in which drawings:

Figure 1 is a plan view of a device constru'cted according to my invention.

Fieure 2 is an enlarged view partly in plan and partly in longitudinal section with a portion thereof being broken away.

Figure 3 vis an end elevation of the device, and, 'I

Figure at is a section taken on the line 4 4 of Figure 2.

In the drawings, wherein for the pur-- pose of illustration is shown the preferred embodiment of theinvention, and wherein similar reference characters designate corresponding parts throughout the several views, the letter A indicates a scraper and tamping rod comprising a stem B; anextension C at one end of ythe stem B; a scraper D carried by the extension C, a head E formed on the stem B opposite the extension C, and a cap F carried by the head E. Y

The stem B may be of a suiiicient length for convenient handling and preferably is 'made of some light material, such as hard wood, whichv in addition to rendering it fi'eXible, makes easy the attachment of the several parts which will be hereinafter described. The one end portion of the stem B is reduced in size, providing a shank 8 and defining a shoulder 9. lfdesired, the shank 8 may taper slightly toward the end thereof.

The extension C preferably comprises an intermediate portion l0 and has the one end thereof of tubular formation and providing awsocket 11 for the reception of the shank `8. The tapered shank 8 may be forced into the socket 11 until the shoulder 9 abuts vthe end of the socket, and will be than the socket 11 so as to reduce the weight thereof in addition'to providing an increased area on the scraper D for the reception of particles scraped from a hole. A reduced end 12, preferably square in cross section, is formed on the intermediate portion 10 opposite to the socket end 11, defining a shoulder 13.

The scraper D herein shown as a disc, pro` vided with an aperture 14 of a cross section corresponding' to the square end 12, is fitted on the reduced end 12 until the face 15 abuts the shoulder 13 and may be removably secured thereon by means of a suitable detachable securing device, such as a nut 16 threaded onto the end 12. it is obvious that this scraper D may be made of various shapes and sizes to accoimnodate different purposes.

Referring noW to the tamping head E, it preferably is formed integral With the stem B at the end opposite to the shank 8. This head E preferably is of a dia-meter greater than the stem B and is provided With a longitudinal groove 18 extending'therethrough, the purpose of which Will appear hereinafn ter. The cap F is carried by the head E at the outer end thereof and is detachably secured thereto by suitable devices, such as screws 19. This cap F is also provided With a groove 2O Which is aligned With the groove 18 in the head E. The purpose of this cap F is to prevent the head E from Wearing or splitting.

In practice, as a hole is being drilled for the admission of anexplosive charge, the scraper or tamping rod A is frequently inserted into vthe hole, the scraper D being innermost and particles that have become de tached by drilling are scraped on to the face 15 of the scraper D and are removed from the hole. When a hole has been drilled to a desired depth and all of the particles removed therefrom, an explosive charge is inserted into the hole 'With the usual fuse or electric Wire leads connected thereto and leading eXteriorly of the hole, said fuse or Wires being adapted to ignite the explosive charge in due course of the operation, tamping material is introducedinto the hole and packed against the explosive charge by revel-sing the rod fr, and pounding with the head E and cap F. During this part of the operation the grooves 18 and 20 serve to protect the fuse or Wires which extend into the hole from some exterior point7 and upon reciprocation of the head E Will slide freely in the grooves 18 and 20.

If desired all of the metall parts, such as the extension C, scraper D, nut 16, and cap F may be made of copper so as to obviate the possibility of causing a spark by coming in contact With a flinty substance when being used in a hole, thus avoiding premature and inopportune explosions should such a spark contact with inflammable gas, coal dust or anything ignitibl'e.

vtamping head having a 'fceive the reduced sh Changes in details may be :made to the form of invention herein shown and described Without departing from the spirit of the invention or scope of the claims.

I claim:

1. A device of the class described comprising a stem, a tamping head formed on one end of said stein, a cap removably secured to said head, an extension carried by said stem at the end opposite to said head. and a scraper removably secured to said extension.

2. device ot the class described coniprising a stem, an enlarged head formed in G5 one end of said stein, said head provided with a longitudinal groove, a cap removal/)tv secured to said head, said cap provided with a groovealigning with said groove in said head, an extension carried by said stein at the end opposite to said head. and a s -raper removably secured to said extension.

3. A blasting' tool comprsing an elongated steni portion, a relatively shorter instal extension connected to an end of said T11 stem and` of heavier material than said stem, and a scraper removably carried at an end of said metal extension. 1

L1. A. blasting tool comprising a long Wooden stem providing a tamp at one end thereof. a relatively sha extension connected at the opposite end of said stein. and .crap-x1'-carried at the tree end of said extension.

A blasting tool comprising an elch-- gated Wooden stern of relatively l u Weight having at one end thereof a laterally en larged tainping head of cylindrical torina4 tion providing a groove loi "itudinally thereof, a Wear cap on the outer .are di" said g groove therein aligning With the groove of said tampi q head, said stem` at its opposite end providing a reduced Shank, armctal extension rclatively short in comparison to the length of said stem providing a soltet adapted c aul of said ,L cui outwardly of said s iclrot in'ovi'f., duced portion. a rre, aud u tacliablv minier-,ting tl e scraper if: v end of the reduced portion ci ,id

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